Date: Thu, 12 Jul 2012 02:26:43 -0700 (PDT) From: SicoSico <resuscitated_wael@hotmail.com> To: freebsd-x11@freebsd.org Subject: Lenovo Y570 backlight Message-ID: <1342085203648-5726207.post@n5.nabble.com>
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Hi, I have Lenovo Y570 which uses 2 graphics cards, nvidia and intel. There is currently no way to choose nvidia from BIOS. I can choose to have both or intel only. I am using FreeBSD HEAD and I have a problem with the screen backlight, it is always at maximum. I am using intel driver x11-drivers/xf86-video-intel /etc/make.conf WITH_NEW_XORG WITH_KMS I tried the following with no result: x11/xbrightness and x11/xcalib, they increase the black color, the screen max brightness is still on. Software illusion, not hardware. #kldload acpi_ibm #kldload acpi_video #sysctl hw.acpi.video.lcd0.active=1 hw.acpi.video.lcd0.active: 0 -> 0 #sysctl hw.acpi.video.lcd0.brightness=30 hw.acpi.video.lcd0.brightness: 70 -> 30 #xbacklight -set 50 No outputs have backlight property xorg.conf Option "RegistryDwords" "EnableBrightnessControl=1" Xorg.0.log (WW) intel(0): Option "RegistryDwords" is not used" Also xev doesn't detect fn+up/down which should change the lcd brightness. -- View this message in context: http://freebsd.1045724.n5.nabble.com/Lenovo-Y570-backlight-tp5726207.html Sent from the freebsd-x11 mailing list archive at Nabble.com.
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